Unit 1 Topic 4 - Proteins And Enzymes
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What do structural proteins do?
Provide strength and support to cell structures
Give examples of structural proteins
• Keratin (hair) • Myosin (muscle fiber)
What are enzymes?
Biological catalysts that speed up a chemical reaction
Give examples of enzymes
• catalase • amylase
What are hormones?
Chemical messengers that are transported in the blood stream
Give examples of hormones
• Adrenaline • Testosterone • Insulin • Oestrogen
What do lymphocytes produce?
Antibodies
What is the function if an antibody?
To defend the body against pathogens
Give an example of an antibody
Immunoglobulins
What is the function of a receptor?
Allows cells to recognise specific substances
What is a substrate?
The substance that an enzyme acts on
A product is…
The substance made after a reaction between the enzyme and its substrate
What are the limiting factors of enzyme activity?
• temperature • PH
What types of reactions are enzymes involved in?
• degradation reactions • synthesis